Public mode

No access to your tenant or devices. Every item links to its source. What this means

CVE-2026-77521

MaxKB: Prompt-injectable agent can lead to command execution

CVSS 3.1 10.0 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-77521

Published

MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.5-lts, assistants with a tool, MCP tool, skill, or sub-application use SandboxShellBackend, which exposes an execute shell tool without excluding it and omits execute from interrupt_on, so human approval is not required. Untrusted chat or ingested content can therefore cause command execution; source deployments with MAXKB_SANDBOX disabled run commands directly as the application user, while the official root container's string-based gosu wrapper allowed shell metacharacters to execute outside the intended sandbox. This issue is fixed in version 2.10.5-lts.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-77521

Published

MaxKB

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "1Panel-dev",
                    "product": "MaxKB",
                    "versions": [
                        {
                            "version": "< 2.10.5-lts",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON